<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script>
			//NodeList对象
			let ps = document.querySelectorAll('p');
			let ps2 = Array.from(ps);
			console.log(ps2);
		</script>
	</body>
</html>
